Identification of elements exposed to flood hazard in a section of Trotus River, Romania
GEOMATICS NATURAL HAZARDS & RISK(2018)
摘要
The purpose of this study is to achieve flood hazard map in terms of limited data and identify the elements exposed to the hazard of floods produced by Trotu River in section belonging to the commune of Ghimes-Fget, Romania. In order to identify the elements exposed to flood hazard, a first step was to determine the potential depth of water in flood conditions, using three bands of flooding for 10, 100 and 1000 years return period and the digital elevation model. In a second step, we elaborated the hazard map and hazard classification according to the Swiss method of hazard assessment, then the thematic layers with buildings and infrastructure were vectorized from orthophotoplan and inventoried in the field, the land use map was extracted from the Corine Land Cover 2012 data set. The maps of the exposed elements have been achieved based on thematic layers and hazard map. The results of this study provide information about the degree of flood hazard and about the elements exposed to hazard, which allows us to identify vulnerability and quantify the risk in a new study and also support the population and authorities to develop prevention and intervention measures in case of flood hazard.
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关键词
Flood,hazard,GIS,exposure,risk
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